Supported by a grant from NIGMS, NIH, grant number: R01 GM093937

One of the main problems in modeling the electrostatic potential of biological macromolecules is that they exist
in water at a given ionic strength and that they have an irregular shape. Analytical solutions of the corresponding
Poisson-Boltzmann Equation (PBE) are not available for such cases and the distribution of the potential can be
found only numerically. DelPhi, developed in Professor Barry Honig's lab in 1986, was the first PBE solver used by many
researchers. The widespread popularity of DelPhi is due to its speed, accuracy (calculation of the electrostatic
free energy is only slightly dependent on the resolution of the grid) and the ability to handle extremely high grid
dimensions. Additional features such as assigning different dielectric constants to different regions of space,
modeling geometric objects and charge distributions, and treating systems containing mixed salt solutions also
attracted many researchers. In addition to the typical potential map, DelPhi can generate and output the
calculated distribution of either the dielectric constant or ion concentration, providing the biomedical community
with extra tools for their research.DelPhi is maintained and developed by the "DelPhi Development Team", which includes members from:
Clemson University & Italian Institute of Technology. Delphi reference papers can be found here: papers.